Tail of the Moon, Vol. 4: v. 4

Usagi will remain in Ieyasu's household forever, apart from her beloved Hanzo, unless she can come up with an elixir of eternal youth. Usagi journeys to a mountain to find a hermit who supposedly knows how to create such an elixir, but he has no intention of sharing his knowledge with her. Even if Usagi is successful, there are others who don't want to see her free to return to Hanzo's arms...